Portsmouth Rhode Island Weather Almanac
Tuesday, May 6, 2025
Cloudy, Rain and Fog, Windy and Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 6, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		62		69		62		+0		85		in	1930		42		in	1917
Minimum Temperature		57		48		46		+11		57		in	2025		34		in	1917
Average Temperature		60		59		54		+6		70		in	1930		38		in	1917
Month Avg Max Temperature		65.8		60.2		60.8		+5.0		76.8		in	2001		48.5		in	1917
Month Avg Min Temperature		53.2		44.5		45.0		+8.2		54.2		in	2010		37.0		in	1964
Month Average Temperature		59.7		52.7		53.0		+6.7		64.3		in	2001		43.3		in	1917
High Heat Index										87		in	1930
Low Wind Chill				45											29		in	1917
Heating Degree Days		5		6		11		-6		27		in	1917		0		in	1934
Month Heating DD		32		74		72		-40		130		in	1917		13		in	2010
Season Heating DD		4847		4805		5245		-398		6322		in	1904		4371		in	2012
Cooling Degree Days		0		0		0		+0		5		in	1930		0		in	All
Month Cooling DD		0		0		0		+0		19		in	2001		0		in	Many
Year Cooling DD		0		0		0		+0		19		in	2001		0		in	Many
Maximum Dew Point		61		63		50		+11		63		in	2024		33		in	1992
Minimum Dew Point		56		48		38		+18		56		in	2025		13		in	2001
Average  Dew Point		59		56		44		+15		59		in	2025		24		in	2001
Month Avg Max Dew Point		59.3		52.3		49.0		+10.3		59.3		in	2025		32.3		in	1952
Month Avg Min Dew Point		48.8		41.3		37.2		+11.7		48.8		in	2025		19.2		in	1974
Month Average Dew Point		54.5		47.2		43.2		+11.3		54.5		in	2025		28.3		in	1952
Precipitation		.22		.29		.12		+.10		.91		in	1967
One Hour Rain		.08		.13						.30		in	2017
Half Hour Rain		.06		.08						.19		in	2017
Hourly Rain Rate		.56		.29						2.49		in	2017
Month Precipitation		.90		.63		.73		+.17		3.08		in	1922		.00		in	2015
Year Precipitation		13.70		23.55		16.46		-2.76		31.53		in	1983		9.78		in	1927
Snow		0.0		0.0		0.0		+0.0		T		in	1917		0.0		in	Many
Snow Depth		0		0		0				0		in			0		in	Many
Month Snow		0.0		0.0		T				T		in	1995		0.0		in	Many
Season Snow		11.9		12.7		33.8		21.9		84.1		in	1996		5.0		in	1998
		May 6, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		98%		99%		90%		+8%		100%		in	2017		52%		in	1979
Minimum Humidity		90%		76%		52%		+38%		93%		in	1998		20%		in	2001
Average Humidity		94%		88%		71%		+23%		97%		in	1998		41%		in	1982
Maximum Barometer		30.23		30.15		30.05		+00.18		30.58		in	2001		29.62		in	1980
Minimum Barometer		30.01		29.83		29.83		+00.24		30.31		in	2001		29.41		in	1966
Average Barometer		30.15		29.99		29.94		+00.21		30.45		in	2001		29.55		in	1980
Average Wind		10.0		6.4		6.7		+3.3		11.9		in	2019		3.4		in	1971
Direction		SE		S		NNE				N					SSW
High Wind Gust		24		25		23		+1		42		in	1989		13		in	1998
Direction		SW		SSW		NNE				S					ESE
Maximum Water Temp		53.6		53.1		52.7		+0.9		57.6		in	2010		45.3		in	2020
Minimum Water Temp		52.9		50.2		49.5		+3.4		55.5		in	2010		42.3		in	2020
Average Water Temp		53.3		51.7		51.1		+2.1		56.6		in	2010		43.8		in	2020
Sunrise/ AM Twilight		5:35:00 AM						5:03:45 AM
Sunset / PM Twilight		7:48:40 PM						8:19:50 PM
Length Of Day		14:13:56
Special Conditions		Dense Fog, Thunderstorm
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